If you don't want to run the Bunn 24hrs, put it on a appliance timer. Set it for half an hour before you wake up and it will be ready when you want to brew, this is what we do to our espresso machines that take from 30 to 60 minutes to warm up.

Once the Bunn is hot, it only draws enough power over an hour to run about a 75 w light bulb for the same time period. The heater is not on constantly but cycles on and off, it spends much more time off than on, just like an espresso machine.

In real life, my name isWayne P.Anything I post is personal opinion and is only worth as much as anyone else's personal opinion. YMMV!

The only way it will "run out of water" is if you leave it on while you go on vacation etc. The "boiler" is filled every time you make coffee.

The way the machine works is that the water heater or boiler, is about twice the size of a brewed pot of coffee (give or take depending on the brewer) and it is full of water that is kept at a constant proper brewing temp. The tap that the brew water exits the boiler (it is not sealed so it is not really a boiler but a closed but not sealed tank, kind of like a pot with a lid on it. You will not be able to build pressure but the heat is trapped inside) at the top. The cold water you pour into the machine when you make coffee is metered in its flow and it enters the boiler at the bottom through a tube that extends all the way down. This is done so that the hot water at the top of the boiler is what you brew with and the water entering the boiler is at the bottom where cooler water would be any way (heat rises cold sinks) This slight inflow of water is not enough to mix in the boiler but as the level rises, the water at the top of the boiler flows out and is what you brew with. In this way, the machine is always ready to brew at the proper temp, well when being used at the designed rate for brewing, the new water will need to heat up to but it will be much quicker than starting from cold.

The only way you can run out of water in the boiler is to not use the machine for many days. Just like a pot on a stove at a very low constant heat, the water will slowly evaporate due to being hot. If it is in regular use, there is no danger of the water running low. The Bunn in our office is left on 24/7 and is not used over the weekend, there are no issues with it.

Proper brewing requires proper temp. My PERSONAL feeling is that drip is drip, when brewed at the same and proper temp. I can not taste any difference between the proper temp auto drip machines. Others might be able to but I can't. I own several Bunn drip brewers and they have all (well except for the one I have not used yet http://coffeegeek.com/forums/coffee/general/641854 ) give excellent service. I now have 2 VPR APS, 1 Bunn RT commercial 5 pot plumb in brewer, a Curtis pour over air pot brewer, and a Curtis plumb in air pot brewer. All give great results and I would be hard pressed to say which one brewed the coffee in a taste test.

In real life, my name isWayne P.Anything I post is personal opinion and is only worth as much as anyone else's personal opinion. YMMV!

Are you worried about a plastic taste to your coffee? If so, I might actually steer clear of the Brazen. I have one, and although the tank is stainless steel, the coffee definitely had a strong plastic taste for the first week. It's become imperceptible over the last few months, but I suspect if you are very sensitive to plastic flavors there might still be some residual overtones.

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